1. Snape killed Dumbledore in book 6: The Half-Blood Prince
2. Scabbers, Ron's mouse died in Book 3 The Prisoner of Azkaban
3.Expecto Patronum means "I await a guardian" in Latin
4. Bartemius Crouch Junior was disguised as Alastar Moody
5.Snape became headmaster after Dumbledore died.
2. Scabbers, Ron's mouse died in Book 3 The Prisoner of Azkaban
3.Expecto Patronum means "I await a guardian" in Latin
4. Bartemius Crouch Junior was disguised as Alastar Moody
5.Snape became headmaster after Dumbledore died.